Thank you so much, did you mean the section 8.15.6??
------------------ Original message ------------------
From: "David G. Johnston";
Sendtime: Wednesday, May 23, 2018 9:18 PM
To: "a"<372660931@qq.com>;
Cc: "amul sul"; "pgsql-general";
Subject: How do I copy an element of composite type array into csv file?
On Wednesday, May 23, 2018, a <
372660931@qq.com> wrote:
Thank you very much.
BTW, may I ask if I would like to do the opposite that copy csv file content into the first element, how should I do it??
COPY B(Ay[1])
from 'E:/products_199.csv' DELIMITER ',' CSV HEADER;
you cannot put "[1]" there. The csv file value has to be an array input literal with only one element. i.e., something like: {(1,2)}
There is no first element as such when you are creating a new record. There will be however many elelements to supply to the array input.
David J.